Air-drying and impurity-removing device for soil detection

Abstract

The invention discloses an air-drying impurity removal device for soil detection, and particularly relates to the technical field of sample treatment.The air-drying impurity removal device comprises a mounting frame and supporting legs fixedly connected with the front portion of the lower end of the mounting frame, a sample treatment structure is arranged in the middle of the inner surface of the mounting frame, and a sample collection structure is fixedly connected with the rear portion of the lower end of the mounting frame; a winnowing structure is arranged at the front end of the sample collecting structure and the lower end of the mounting frame. According to the air-drying and impurity-removing device for soil detection, soil is continuously crushed under the action of the sample treatment structure, crushed soil particles are dried under the action of the winnowing structure, and the soil particles are further crushed into fine powder by the sample treatment structure; the soil powder mixed with impurities enters the sample collection structure, and the soil sample and the impurities are separated through cooperation of the winnowing structure and the sample collection structure, so that the purity of the soil sample is guaranteed, subsequent detection is facilitated, and detection errors are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sample processing, and in particular to an air-drying and impurity-removing device for soil detection. Background Art

[0002] Soil testing is an important part of modern agriculture and environmental monitoring. Its accuracy directly affects the quality of agricultural production and the protection of the ecological environment. In the process of soil testing, the air-drying and impurity removal device is one of the indispensable equipment. It is mainly used to remove moisture and impurities from soil samples for subsequent analysis and testing. At present, the common air-drying and impurity removal devices on the market mostly use a combination of mechanical vibration and wind power to separate large impurities in the soil through a vibrating screen, and use wind power to remove fine impurities and moisture.

[0003] However, existing air-drying and impurity removal devices have some problems in practical applications. First, existing devices are often unable to effectively process large pieces of soil samples after collection. Due to the different textures and particle sizes of soil samples, large pieces of soil are prone to block the screen when entering the device, resulting in reduced air-drying and impurity removal efficiency. In addition, the impurity separation efficiency of existing devices is low, and it is not possible to completely remove fine impurities in the soil. Summary of the invention

[0004] The main purpose of the present invention is to provide an air-drying and impurity removal device for soil testing, which can effectively solve the problem that the existing devices cannot effectively process large pieces of soil samples after collection and have low impurity separation efficiency.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A wind-drying and impurity-removing device for soil testing comprises a mounting frame and a supporting leg fixedly connected to the front portion of the lower end of the mounting frame, a control console fixedly mounted on the left end of the mounting frame, a conveying belt fixedly mounted on the lower portion of the inner surface of the mounting frame, a sample processing structure arranged in the middle portion of the inner surface of the mounting frame, a sample collecting structure fixedly connected to the rear portion of the lower end of the mounting frame, a wind selection structure arranged together with the front end of the sample collecting structure and the lower end of the mounting frame, and a motor for driving the conveying belt fixedly connected to the rear portion of the right end of the mounting frame via a bracket.

[0006] Preferably, the sample processing structure includes conical crushing tables which are symmetrically distributed frontward and rearward and slidably connected to the inner surface of the mounting frame; the upper end of the mounting frame is symmetrically provided with crushing drive assemblies which are slidably connected to adjacent conical crushing tables; the rear part of the inner surface of the mounting frame is linearly distributed and rotatably connected to a plurality of crushing rollers; the left and right sides of the outer surfaces of the plurality of crushing rollers are connected by belt winding; the right end of one of the crushing rollers is fixedly connected to a motor 2 which is fixedly connected to the right end of the mounting frame via a bracket; the crushing roller located at the front is connected to the crushing drive assembly by a belt drive.

[0007] Preferably, the upper end of the mounting frame is slidably connected to a center rod at a portion located between the two conical crushing tables, the front and rear ends of the center rod are fixedly connected to sliding plates, the rear ends of the two sliding plates are provided with wedge-shaped grooves, the end of the center rod away from the conical crushing table is fixedly connected to a connecting rod, the end of the connecting rod away from the center rod is fixedly connected to a driving rod, the end of the mounting frame away from the conical crushing table is provided with a rotating disk and a limiting groove located on the lower side of the rotating disk, the driving rod is slidably connected to the inner surface of the limiting groove, and the end of the rotating disk close to the driving rod is eccentrically rotatably connected to a connecting shaft slidably connected to the inner surface of the driving rod.

[0008] Preferably, slides are symmetrically fixedly connected to the left and right ends of the conical crushing table, and the inner surface of the mounting frame is symmetrically provided with slide grooves slidably connected to adjacent slides, and the bottom wall of the inner surface of the slide groove and the lower end of the slide are jointly and fixedly connected with a spring, and the upper end of the mounting frame is provided with a hole connected to the slide groove, and the inner surface of the mounting frame is slidably connected with a sliding rod tightly attached to the upper end of the slide, and the part of the sliding rod located at the upper end of the mounting frame is tightly attached to the inclined part of the inner surface of the wedge-shaped groove, and the lower end of the conical crushing table is provided with tooth grooves distributed linearly.

[0009] Preferably, a plurality of protrusions are annularly distributed and fixedly connected to the outer surface of the crushing roller, and a cleaning brush is fixedly connected to a portion of the inner surface of the mounting frame located in front of the outer surface of the crushing roller.

[0010] Preferably, the air selection structure includes an air chamber fixedly connected to the lower end of the mounting frame, a fan connected to the front end of the air chamber and communicating with its inner cavity, guide plates fixedly connected to the inner surface of the air chamber symmetrically, a drying component fixedly connected to the middle of the conveyor belt on the inner surface of the mounting frame, a connecting hole two connected to the drying component is provided in the inner cavity of the air chamber, and a plurality of guide holes connected to the inner cavity of the sample collection structure are linearly distributed at the rear end of the air chamber.

[0011] Preferably, the drying component includes a support plate fixedly connected to the inner surface of the mounting frame, a plurality of ventilation holes connected to its inner cavity are provided on the upper end of the support plate, a heating wire is fixedly connected to the inner surface of the ventilation hole by a snap, a heating driver connected to the positive and negative poles of the heating wire is fixedly connected to the front end of the support plate, a connecting hole one connected to the adjacent connecting hole two is symmetrically provided at the left and right ends of the support plate, and a plurality of connecting holes connected to the connecting hole one are provided on the bottom wall of the inner cavity of the support plate.

[0012] Preferably, the sample collection structure includes an installation box fixedly connected to the rear end of the air chamber and the lower end of the installation frame, the front part of the inner cavity of the installation box is connected to the inner cavity of the air chamber through a guide hole, an L-shaped baffle is fixedly connected to the middle part of the inner surface of the installation box, the horizontal part of the L-shaped baffle is located at the upper part of the rear end of the conveyor belt, and the vertical part of the L-shaped baffle is linearly fixedly connected to a mesh screen, a plurality of wedge-shaped blocks are linearly distributed and fixedly connected to the front end of the mesh screen, and the front part of the bottom wall of the inner cavity of the installation box is slidably connected to a waste frame connected to its left end.

[0013] Preferably, a sample frame connected to the left end of the installation box inner cavity bottom wall is slidably connected to the rear portion, and an air outlet connected to the rear end is provided on the top wall of the installation box located above the sample frame, and an isolation net is fixedly connected to the inner surface of the air outlet.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention transports the collected soil samples to the lower side of the sample processing structure through the action of a motor and a conveyor belt, and continuously crushes the soil samples through the action of the sample processing structure, and dries the crushed soil particles in cooperation with the action of the air selection structure and further crushes them into fine powder by the sample processing structure. Furthermore, the soil powder mixed with impurities enters the sample collection structure, and the soil sample is separated from the impurities through the cooperation of the air selection structure and the sample collection structure, thereby ensuring the purity of the soil sample, facilitating subsequent testing, and reducing testing errors. The present invention drives the conical crushing table in a circular motion by means of the crushing drive components arranged on both sides, drives the slide table and the conical crushing table downward by means of the pressing action of the wedge-shaped groove on the slide rod, crushes the large soil particles into small particles by means of the tooth grooves provided at the lower part of the conical crushing table, and further compresses and crushes the particles by means of the continuously rotating crushing roller at the rear side and the cleaning brush provided on its surface, so that the impurities therein are exposed to the outside, thereby facilitating subsequent separation, and in this process, the air separation structure continuously dries the particles to reduce the moisture content in the soil sample. The present invention utilizes the functions of a fan, an air chamber and a guide plate installed inside thereof to evenly distribute the wind force of the fan to the guide hole and the second connecting hole, and the air heated by the heating wire is sent out from the ventilation hole through the cooperation of the second connecting hole and the drying component, thereby drying the soil through the conveyor belt. In the present invention, the mixture of dried soil samples and impurities will enter the installation box, and the air in the wind chamber will be blown out obliquely to the rear through the guide hole, thereby sending the small particles of soil samples in the mixture through the mesh screen to the rear side of the L-shaped baffle, while the impurities will be blocked and fall through the wedge-shaped block to the waste frame below to wait for centralized processing, thereby realizing automatic separation of impurities and soil samples and optimizing the sample preparation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the sample processing structure of the present invention; Figure 3 is a schematic cross-sectional structure diagram of a sample processing structure of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the local structure at B in the middle; Figure 5 For the present invention Figure 2 A schematic diagram of the enlarged local structure at center A; Figure 6 It is a schematic structural diagram of the crushing roller of the present invention; Figure 7 It is a structural schematic diagram of the air selection structure of the present invention; Figure 8 It is a schematic diagram of a cross-sectional structure of the wind selection structure of the present invention when viewed from above; Fig. 9 It is a structural schematic diagram of the drying component of the present invention; Fig.10 It is a schematic structural diagram of the sample collection structure of the present invention.

[0016] In the figure: 1. sample collection structure; 11. L-shaped baffle; 12. mesh screen; 13. wedge block; 14. isolation net; 15. sample frame; 16. waste frame; 17. installation box; 18. air outlet; 2. air selection structure; 21. air chamber; 22. fan; 23. guide plate; 24. drying component; 241. support plate; 242. ventilation hole; 243. heating wire; 244. heating driver; 245. connecting hole 1; 25. guide hole; 26. connecting hole 2; 3. support leg; 4. sample processing structure ; 41. Conical crushing table; 411. Tooth groove; 412. Slide groove; 413. Spring; 414. Slide table; 415. Sliding rod; 42. Crushing drive assembly; 421. Sliding plate; 422. Wedge groove; 423. Rotating disk; 424. Connecting shaft; 425. Limiting groove; 426. Driving rod; 427. Connecting rod; 428. Center rod; 43. Crushing roller; 431. Cleaning brush; 432. Bump; 44. Motor 2; 5. Conveyor belt; 51. Motor 1; 6. Mounting frame; 7. Control console. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] Embodiment 1, as Figure 1As shown, a wind-drying and impurity-removing device for soil testing comprises a mounting frame 6 and a supporting leg 3 fixedly connected to the front lower end of the mounting frame 6, a control console 7 is fixedly mounted on the left end of the mounting frame 6, a conveying belt 5 is fixedly mounted on the lower inner surface of the mounting frame 6, a sample processing structure 4 is arranged in the middle of the inner surface of the mounting frame 6, a sample collecting structure 1 is fixedly connected to the rear lower end of the mounting frame 6, a wind selection structure 2 is jointly arranged at the front end of the sample collecting structure 1 and the lower end of the mounting frame 6, and a motor 51 for driving the conveying belt 5 is fixedly connected to the rear right end of the mounting frame 6 through a bracket.

[0019] During the operation of this embodiment, the collected soil sample is first transported to the lower side of the sample processing structure 4 by the action of the motor 1 51 and the conveyor belt 5, and is continuously crushed by the action of the sample processing structure 4. The crushed soil particles are dried with the action of the air separation structure 2 and further crushed into fine powder by the sample processing structure 4. Furthermore, the soil powder mixed with impurities enters the sample collection structure 1, and the soil sample is separated from the impurities through the cooperation of the air separation structure 2 and the sample collection structure 1, thereby ensuring the purity of the soil sample, facilitating subsequent testing, and reducing detection errors.

[0020] It should be noted that the above-mentioned control console 7 is a conventional controller for controlling the start and stop of the motors in each structure therein. This structure has been widely used in the prior art and is a mature technical means. The internal structure, operating principle, wiring, and control method thereof will not be described in detail in the present invention.

[0021] Embodiment 2: Based on embodiment 1, this embodiment drives the conical crushing table 41 in a circular motion through the crushing drive components 42 arranged on both sides, and uses the pressing effect of the wedge-shaped groove 422 on the sliding rod 415 to drive the sliding table 414 and the conical crushing table 41 to move downward, and uses the tooth grooves 411 opened at the lower part of the conical crushing table 41 to crush large pieces of soil particles to break them into small pieces, and further uses the continuously rotating crushing roller 43 on the rear side and the cleaning brush 431 arranged on its surface to further compress and crush these particles, so that the impurities therein are exposed to the outside, thereby facilitating subsequent separation. In this process, it is continuously dried by the action of the air selection structure 2 to reduce the moisture content in the soil sample.

[0022] Specifically, in order to achieve the crushing of the collected soil, refer to Figure 2 and Figure 3The sample processing structure 4 includes conical crushing tables 41 symmetrically distributed front and back and slidably connected to the inner surface of the mounting frame 6. The upper end of the mounting frame 6 is symmetrically provided with crushing drive assemblies 42 slidably connected to the adjacent conical crushing tables 41. The rear part of the inner surface of the mounting frame 6 is linearly distributed and rotatably connected with a plurality of crushing rollers 43. The left and right sides of the outer surfaces of the plurality of crushing rollers 43 are connected by belt winding. The right end of one of the crushing rollers 43 is fixedly connected to a motor 2 44 fixedly connected to the right end of the mounting frame 6 through a bracket. The crushing roller 43 located at the front is connected to the crushing drive assembly 42 through a belt drive.

[0023] The conical crushing table 41 is pressed downward cyclically under the action of the crushing drive assembly 42, crushing large pieces of soil into small particles, which continue to move backward under the action of the conveyor belt 5 and then enter under the crushing roller 43. Under the continuous rotation of the crushing roller 43, the particles are further crushed to expose the impurities therein; During this process, the air separation structure 2 continues to dry the soil samples, which accelerates their crushing efficiency while also cooperating with the crushing action to reduce the moisture content inside them, thereby improving the drying efficiency and further reducing the residual moisture.

[0024] Further, in order to realize the cyclic drive of the rolling action of the conical crushing table 41, refer to Figure 4 and Figure 5 The part of the upper end of the mounting frame 6 located between the two conical crushing tables 41 is slidably connected with a center rod 428, and the front and rear ends of the center rod 428 are fixedly connected with sliding plates 421, and the rear ends of the two sliding plates 421 are provided with wedge-shaped grooves 422, and the end of the center rod 428 away from the conical crushing table 41 is fixedly connected with a connecting rod 427, and the end of the connecting rod 427 away from the center rod 428 is fixedly connected with a driving rod 426, and the end of the mounting frame 6 away from the conical crushing table 41 is provided with a rotating disk 423 and a limiting groove 425 located on the lower side of the rotating disk 423, and the driving rod 426 is slidably connected to the inner surface of the limiting groove 425, and the end of the rotating disk 423 close to the driving rod 426 is eccentrically rotatably connected to a connecting shaft 424 that is slidably connected to the inner surface of the driving rod 426.

[0025] The rotation of the rotating disk 423 will drive the connecting shaft 424 to move along a circular trajectory, and then drive the driving rod 426 to move. However, the upper and lower sides of the driving rod 426 are respectively restricted by the center rod 428 and the limiting groove 425. Therefore, when the connecting shaft 424 moves in a circular trajectory, it can only drive the driving rod 426 to move forward and backward under the restriction of the limiting groove 425 and the center rod 428, and then drive the center rod 428 to slide on the upper end of the mounting frame 6. In this process, it can pull the sliding plate 421 to move forward and backward, and then drive the conical crushing table 41 to cyclically press downward through the wedge-shaped groove 422 opened inside the sliding plate 421.

[0026] Further, to compact large pieces of soil into small particles, see Figure 3 and Figure 5 The left and right ends of the conical crushing table 41 are symmetrically fixedly connected with slides 414, the inner surface of the mounting frame 6 is symmetrically provided with slide grooves 412 that are slidably connected to the adjacent slides 414, the bottom wall of the inner surface of the slide groove 412 and the lower end of the slide 414 are fixedly connected with a spring 413, the upper end of the mounting frame 6 is provided with a hole connected to the slide groove 412, and the inner surface of the hole is slidably connected with a sliding rod 415 that is tightly attached to the upper end of the slide 414, the part of the sliding rod 415 located at the upper end of the mounting frame 6 is tightly attached to the inclined part of the inner surface of the wedge-shaped groove 422, and the lower end of the conical crushing table 41 is linearly distributed with tooth grooves 411.

[0027] Specifically, the sliding rod 415 disposed inside the sliding plate 421 will follow the cyclic movement of the sliding plate 421, and will be pressed downward by the wedge-shaped groove 422, or will move upward on the inclined surface of the wedge-shaped groove 422 due to the action of the spring 413 and the slide 414, thereby achieving: When the wedge-shaped groove 422 moves backward, the wedge-shaped groove 422 presses the sliding rod 415 and the sliding table 414 to move downward, thereby driving the conical crushing table 41 to move downward, and the tooth groove 411 opened at the lower part thereof presses the soil to crush it, and at the same time, the soil at the rear is prevented from moving backward under the action of the conveyor belt 5; At the same time, since the sliding rod 415 is tightly attached to the inclined surface of the wedge groove 422 under the action of the spring 413 and the slide 414, when the sliding plate 421 moves forward, the sliding rod 415 will also rise. At this time, the tooth groove 411 rises with the slide 414, thereby causing the crushed soil to move backward, and a new soil sample will enter under the conical crushing table 41 and be crushed by the conical crushing table 41.

[0028] Further, in order to break up the soil particles and expose the impurity particles contained therein to the outside, see Figure 6 A plurality of protrusions 432 are fixedly connected to the outer surface of the crushing roller 43 in an annular distribution, and a cleaning brush 431 is fixedly connected to the inner surface of the mounting frame 6 located on the front side of the outer surface of the crushing roller 43 .

[0029] The crushing roller 43 rotates cyclically under the action of the motor 2 44, and then further grinds the crushed soil sample through the cleaning brush 431 installed on its surface. The distance between the cleaning brush 431 and the conveyor belt 5 is very small, so the soil sample can be crushed into fine particles. Since impurities such as plant roots or stones cannot be crushed, these impurities can also be exposed from the soil to facilitate subsequent separation.

[0030] Embodiment 3: Based on Embodiment 2, this embodiment further utilizes the functions of the fan 22, the air chamber 21 and the guide plate 23 installed therein to evenly distribute the wind force of the fan 22 to the guide hole 25 and the second connecting hole 26. The air heated by the heating wire 243 is sent out from the ventilation hole 242 through the cooperation between the second connecting hole 26 and the drying assembly 24, thereby drying the soil through the conveyor belt 5. Furthermore, the mixture of the dried soil sample and impurities will enter the installation box 17. At this time, the air in the wind chamber 21 is blown out obliquely to the rear through the guide hole 25, and the small particles of soil sample in the mixture are sent to the rear side of the L-shaped baffle 11 through the mesh screen 12, while the impurities will be blocked and fall through the wedge block 13 to the waste frame 16 below to wait for centralized processing, thereby realizing automatic separation of impurities and soil samples and optimizing the sample preparation process.

[0031] Specifically, to achieve the drying of soil and separation of impurities, refer to Figure 7 and Figure 8 The air selection structure 2 includes an air chamber 21 fixedly connected to the lower end of the mounting frame 6, a fan 22 connected to its inner cavity is fixedly connected to the front end of the air chamber 21, a guide plate 23 is fixedly connected to the inner surface of the air chamber 21 symmetrically, a drying component 24 is fixedly connected to the middle of the conveyor belt 5 on the inner surface of the mounting frame 6, a connecting hole 26 connected to the drying component 24 is opened in the inner cavity of the air chamber 21, and a plurality of guide holes 25 connected to the inner cavity of the sample collection structure 1 are linearly distributed at the rear end of the air chamber 21.

[0032] The fan 22 continuously blows air into the air chamber 21. Through the guiding effect of the guide plate 23, part of the airflow will be blown into the sample collection structure 1 through the guide hole 25 for air selection and screening, and the other part will enter the drying component 24 through the connecting hole 26 to dry the soil sample on the lower side of the sample processing structure 4.

[0033] Further, in order to cooperate with the cone crushing table 41 and the crushing roller 43 to crush the soil and simultaneously provide support for its crushing operation, refer to Fig. 9 The drying component 24 includes a support plate 241 fixedly connected to the inner surface of the mounting frame 6, a plurality of ventilation holes 242 connected to its inner cavity are opened at the upper end of the support plate 241, a heating wire 243 is fixedly connected to the inner surface of the ventilation hole 242 by a buckle, a heating driver 244 connected to the positive and negative electrodes of the heating wire 243 is fixedly connected to the front end of the support plate 241, a connecting hole 1 245 connected to the adjacent connecting hole 2 26 is symmetrically opened at the left and right ends of the support plate 241, and a plurality of connecting holes connected to the connecting hole 1 245 are opened on the bottom wall of the inner cavity of the support plate 241.

[0034] The support plate 241 can provide support for the crushing of the conical crushing table 41 and the crushing roller 43 on its upper part. At the same time, the connecting hole 1 245 opened on both sides thereof is connected with the connecting hole 26. The air sent into the connecting hole 26 is evenly distributed to the inner side of the support plate 241 through the connecting hole, and after being heated by the heating wire 243, it is sent out from the ventilation hole 242 and the soil on the upper part is dried through the conveyor belt 5.

[0035] Further, to achieve separation and storage of impurities, see Figure 7 and Fig.10 The sample collection structure 1 includes an installation box 17 fixedly connected to the rear end of the air chamber 21 and the lower end of the installation frame 6. The front part of the inner cavity of the installation box 17 is connected to the inner cavity of the air chamber 21 through the guide hole 25. An L-shaped baffle 11 is fixedly connected to the middle part of the inner surface of the installation box 17. The horizontal part of the L-shaped baffle 11 is located at the upper part of the rear end of the conveyor belt 5, and its vertical part is linearly fixedly connected to the mesh screen 12. A plurality of wedge blocks 13 are linearly distributed and fixedly connected to the front end of the mesh screen 12. The front part of the bottom wall of the inner cavity of the installation box 17 is slidably connected to the waste frame 16 connected to its left end.

[0036] Further, to achieve the storage of soil samples, see Figure 7 and Fig.10 The rear part of the bottom wall of the inner cavity of the installation box 17 is slidably connected with a sample frame 15 connected with its left end. The top wall of the installation box 17 located on the upper side of the sample frame 15 is provided with an air outlet 18 connected with its rear end, and the inner surface of the air outlet 18 is fixedly connected with an isolation net 14.

[0037] The crushed and dried soil samples will fall into the installation box 17 at the end of the conveyor belt 5 and fall evenly under the action of gravity. The wind from the fan 22 is blown out through the guide hole 25, blowing the soil particles with lower density to the mesh screen 12. These particles can pass through the mesh screen 12 into the back side of the L-shaped baffle 11 and finally fall into the sample frame 15. However, stones and plant roots and stems are relatively larger in volume and heavier in weight, so they will not be affected by the wind, but will naturally fall into the waste frame 16. Even if some roots and stems lose water due to drying and are blown backwards by the wind, they will be blocked by the mesh screen 12 and fall back into the waste frame 16 through the wedge block 13. The mesh screen 12 not only blocks impurities, but also blocks some large particles of soil that have not been crushed, thereby ensuring the fineness of the soil sample inside the sample frame 15.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for air drying and removing impurities for soil testing, comprising a mounting frame (6) and a support leg (3) fixedly connected to the front lower end of the mounting frame (6), a console (7) fixedly mounted on the left end of the mounting frame (6), characterized in that: A conveyor belt (5) is fixedly mounted on the lower portion of the inner surface of the installation frame (6); a sample processing structure (4) is arranged in the middle portion of the inner surface of the installation frame (6); a sample collection structure (1) is fixedly connected to the rear portion of the lower end of the installation frame (6); a wind selection structure (2) is arranged at the front end of the sample collection structure (1) and the lower end of the installation frame (6); and a motor (51) for driving the conveyor belt (5) is fixedly connected to the rear portion of the right end of the installation frame (6) via a bracket.

2. The air-drying and impurity-removing device for soil detection according to claim 1, characterized in that: The sample processing structure (4) comprises conical crushing tables (41) symmetrically distributed front and rear and slidably connected to the inner surface of the mounting frame (6); a crushing drive assembly (42) symmetrically arranged left and right on the upper end of the mounting frame (6) and slidably connected to the adjacent conical crushing tables (41); a plurality of crushing rollers (43) are linearly distributed and rotatably connected to the rear of the inner surface of the mounting frame (6); the left and right sides of the outer surfaces of the plurality of crushing rollers (43) are connected by belt winding; the right end of one of the crushing rollers (43) is fixedly connected to a second motor (44) fixedly connected to the right end of the mounting frame (6) by a bracket; the crushing roller (43) located at the front is connected to the crushing drive assembly (42) by belt transmission.

3. The air-drying and impurity-removing device for soil detection according to claim 2, characterized in that: The portion of the upper end of the installation frame (6) located between the two conical crushing tables (41) is slidably connected to a center rod (428); the front and rear ends of the center rod (428) are fixedly connected to sliding plates (421); the rear ends of the two sliding plates (421) are provided with wedge-shaped grooves (422); the end of the center rod (428) away from the conical crushing table (41) is fixedly connected to a connecting rod (427); the end of the connecting rod (427) away from the center rod (428) is fixedly connected to a driving rod (426); the end of the installation frame (6) away from the conical crushing table (41) is provided with a rotating disk (423) and a limiting groove (425) located at the lower side of the rotating disk (423); the driving rod (426) is slidably connected to the inner surface of the limiting groove (425); and the end of the rotating disk (423) close to the driving rod (426) is eccentrically rotatably connected to a connecting shaft (424) slidably connected to the inner surface of the driving rod (426).

4. The air-drying and impurity-removing device for soil testing according to claim 3, characterized in that: The left and right ends of the conical crushing table (41) are symmetrically fixedly connected with slides (414); the inner surface of the mounting frame (6) is symmetrically provided with slide grooves (412) slidably connected to adjacent slides (414); the bottom wall of the inner surface of the slide groove (412) and the lower end of the slide (414) are fixedly connected with a spring (413); the upper end of the mounting frame (6) is provided with a hole connected with the slide groove (412); the inner surface of the mounting frame (6) is slidably connected with a slide rod (415) in close contact with the upper end of the slide (414); the portion of the slide rod (415) located at the upper end of the mounting frame (6) is in close contact with the inclined portion of the inner surface of the wedge-shaped groove (422); and the lower end of the conical crushing table (41) is provided with tooth grooves (411) distributed linearly.

5. The air-drying and impurity-removing device for soil testing according to claim 2, characterized in that: A plurality of protrusions (432) are fixedly connected to the outer surface of the crushing roller (43) in an annular distribution, and a cleaning brush (431) is fixedly connected to the inner surface of the mounting frame (6) at a portion located on the front side of the outer surface of the crushing roller (43).

6. The air-drying and impurity-removing device for soil testing according to claim 1, characterized in that: The air selection structure (2) comprises an air chamber (21) fixedly connected to the lower end of the mounting frame (6); a fan (22) connected to the inner cavity of the air chamber (21) is fixedly connected to the front end thereof; a guide plate (23) is fixedly connected to the inner surface of the air chamber (21) symmetrically; a drying component (24) is fixedly connected to the middle of the conveyor belt (5) on the inner surface of the mounting frame (6); a second connecting hole (26) connected to the drying component (24) is provided in the inner cavity of the air chamber (21); and a plurality of guide holes (25) connected to the inner cavity of the sample collection structure (1) are linearly distributed at the rear end thereof.

7. The air-drying and impurity-removing device for soil testing according to claim 6, characterized in that: The drying assembly (24) comprises a support plate (241) fixedly connected to the inner surface of the mounting frame (6); a plurality of ventilation holes (242) communicating with the inner cavity of the support plate (241) are provided at the upper end; a heating wire (243) is fixedly connected to the inner surface of the ventilation hole (242) via a buckle; a heating driver (244) connected to the positive and negative electrodes of the heating wire (243) is fixedly connected to the front end of the support plate (241); a connecting hole 1 (245) communicating with an adjacent connecting hole 2 (26) is symmetrically provided at the left and right ends of the support plate (241); and a plurality of connecting holes connected to the connecting hole 1 (245) are provided on the bottom wall of the inner cavity of the support plate (241).

8. The air-drying and impurity-removing device for soil testing according to claim 6, characterized in that: The sample collection structure (1) comprises a mounting box (17) fixedly connected to the rear end of the air chamber (21) and the lower end of the mounting frame (6); the front part of the inner cavity of the mounting box (17) is connected to the inner cavity of the air chamber (21) through a guide hole (25); an L-shaped baffle (11) is fixedly connected to the middle part of the inner surface of the mounting box (17); the horizontal part of the L-shaped baffle (11) is located at the upper part of the rear end of the conveyor belt (5); the vertical part of the L-shaped baffle (11) is linearly fixedly connected to a mesh screen (12); the front end of the mesh screen (12) is linearly distributed and fixedly connected to a plurality of wedge-shaped blocks (13); the front part of the inner cavity bottom wall of the mounting box (17) is slidably connected to a waste frame (16) connected to the left end thereof.

9. The air-drying and impurity-removing device for soil testing according to claim 8, characterized in that: The rear portion of the bottom wall of the inner cavity of the installation box (17) is slidably connected to a sample frame (15) in communication with the left end thereof, and the top wall of the installation box (17) located above the sample frame (15) is provided with an air outlet (18) in communication with the rear end thereof, and the inner surface of the air outlet (18) is fixedly connected to an isolation net (14).

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